Burner



July 31, 1928.

.7 C. FISCHER BURNER Filed March 24, 1927 2 Sheets-Sheet l Carl Baker INVENTQR'...

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A'I'I'ORNEY July 31, 1928.

c. FISCHER BURNER Filed March '24, 1927 2 Sheets-Sheet I-vENTOR- I D I Patented July 31, 1928.

.UNITEDSTATES PATENT OFFICE.

CARL FISCHER, OF WEST HOMESTEAD, PENNSYLVANIA, ASSIGNOR TO AMERICAN HEAT ECONOMY BUREAU, OF PITTSBURGH,

DELAWARE.

PENNSYLVANIA, A CORPORATION OF BURNER.

Application filed March 24, 1927. Serial No. 178,047.

burner through an opening in the wall or shell of the furnace to discharge the flame therein.

The main object of my invention is to provide a burner ofthis type in which the fuel in either gaseous, liquid or powdered form is thoroughly mixed with air in a commingling chamber from which it is discharged through a nozzle to produce a concentrated flame, the particular construction of my improved burner effecting a whirling motion of the combustible mixture in the commingling chamber to produce an admixture that will give maximum heat and will result in an economical consumption of the fuel.

A further object of my invention is to provide a fuel burner that is simple and compact in construction, and in which the parts thereof are so constructed and 21SSG111- bled that they can be readily separated for cleaning the same when necessary.

With these principal objects in view my invention consists of a burner for gaseous, liquid and powdered fuel comprising a body portion having a cylindrical commingling chamber with fuel and air passages leading into the same anda discharge opening opposite the fuel passage, said body portion containing a detachable fuel discharging tube extending axially 'into the cylindrical coinmingling chamber, and a detachable nozzle for the discharge opening to concentrate the combustible mixture in its discharge from the burner, the commingling chamber having diagonally disposed vanes around the fuel discharging tube to cooperate with, tangential fuel discharging openings through said tube to effect a thorough admixture of the fuel and air on its passage through the burner, all as hereinafter fully described and particularly set forth in the appended claims.

In the accompanying drawings:

Figure 1 is a side elevation of a fuel burner constructed in accordance with my invention.

Fig. 2 is a vertical transverse sectional View through the same.

Fig. 3 is a vertical sectional view on the line 33 of Fig. 2. i

Fig. 4 is a detail front view of the detachable nozzle.

Fig. 5 1s a detail view of the fuel discharging tube.

Figs. 6 and 7 are sectional views through the fuel discharging tube on the lines 66, and 7"? of Fig. 5.

In carrying out my invention the main portion or body of the burner is formed by. casting to provide a cylindrical commingling chamber 10 with a large, pipe extension 11 at the periphery thereof, a small pipe extension 12 projecting from the center of the rear wall of said cominingling chamber and a circular discharge opening 13 in the front wall opposite the last mentioned pipe extension, an annularflange 14 being" formed on the front wall around the discharge opening to receive a funnel shaped dischargenozzle 15 attached thereto by bolts 16 passing through ears 17 at'the enlarged end of said nozzle into the flange on the body portion of the burner. The pipe extension 11 is for supplying air to the commingling chamber and the fuel is fed into the same through the pipe extension 12, said pipe extensions being threaded at their outer ends for the connection of pipes leading from the air and fuel supply.

Threaded into the inner end of the pipe extension 12, to extend across the center of the commingling chamber there is a fuel ,discharging tube 18 of such length that its Outer closed end 18 extends slightly beyond the discharge opening 13, said fuel discharging tube having narrow longitudinal openings or slits 19 through the sides thereof tangeiitially for discharging the fuel into the commingling chamber in such manner as to cooperate with diagonally disposed vanes 20 extending across the commiiigling chamber and arranged in series around the fuel discharging tube. The annular series of vanes or baffle-plates 20 are located beyond the plane of the circular discharge opening 13 leaving an annular space around the same within the peripheral wall of the commingling chamber, as well as an annular space between said bathe-plates and fuel discharging tube, and it will be noted that the tangential openings or slits in the fuel discharging tube do not extend the full Width of the commingling chamber but are in the forward port on therepf to permit uninterrnptedcurrents of air to flow around the rear portion of said commingling chamber and commingle with the currents of air into which the fuel is discharged, the tangential discharge openings 19 cooperating with the baffle-plates 20 to impart a whirling motion to the admixture of fuel and air which is maintained as the combustible mixture passes through and out of the dischargenozzle 15, whereby the fuel; and air are further commin led and theflame from the burner is eoncentrated and'has a swirling action that will increase the intensity of the heat.

The air inlet 11 is provided with a valve or damper 21 for regulating the amount of air fed to the comniingli'ng chamber, the stem 21 of the valve having an operating lever 22 on its outer endwith a pointer 22 moving over a dial-plate 23, and in like manner the fnel inlet 12' is provided with a similar valve (not shown) operated by lever 24 also provided with a pointer, 24 moving over dial-plate 25, these valves providing for accurately proportioning the fuel and air admitted to the coin ningling chamber. Any form of valve cooperating regulating means may be employed for the purpose mentioned, the arrangement shown being a conventional type of regulating valve, it being understood however that the provision of proportioning valves increase the effectiveness of the burner.

Inthe operation of'the burner either gaseous, liquid or powdered fuel may be used being fed into the commingling chamber through the discharge openings or slits 19 in the tube 18 connected to the valved inlet pipe 12, and as the fuel is discharged into the commingling chamber tangentially the air which enters from the valved inlet pipe 11 takes it up and arapid whirling motion is imparted to the admixture by the diagonally disposed halite-plates 20 to thoroughly mix the same together in the commingling chamher and as they pass through and out of the nozzle 15, the valves being properly adjusted to proportion the fuel and air according to the fuel used and the character of flalnedesired. Any fuel or combination of fuels, liquid, gaseous or powdered, may be employed, the arrangement of the inlet openlugs 11 and 12 with respect to the cylindrical commingling chamber in connection with the special form of feeding tube 18 and cooperating baffle-plates providing for a thorough admixture of the combustible mixture in its passagefrom the commingling chamber andthrough the tapered discharge nozzle; in other words, theseveral elements ofthc burner cooperate in an effective inannerto produce aflame of intense heat.

The burner inay be used for various purposes, and is particularly adapted for supplying heat to furnac s of all kinds as it provides an intense heat from a concentrated flame that can be directed to any point desired and the thorough admixture of the fuel and air effects an economy in the consumption of the fuel.

When the burner needs cleaning the nozzle and fuel discharging tube can be readily disconnected and removed from the body portion for the purpose, and in rc-asscinbling the partsthe' tuel discharging tube is adjusted so that the discharge-openings there in will direct the fuel desired with respect to the bathe-plates, as for instance towards the inner end thereof as shown in Fig. 3.

It will obvious that by the particular construction herein shown and described I produce a burner that can be n'ianufactured and sold at small cost, that it will be durable in use and positive in its action, and that it can be readily adjusted to vary the proportions of the admixture of fuel and air. Furthermore it will be obvious that minor modifications or changes may be made in the formation of the burner parts and yet obtain similar results, all within thespirit and scope of the following claims.

I claim:

1. A burner comprising a body portion having a commingling chamber with fuel and air inlet openings leading into the same at right angles to each other and a discharge opening in one side, a fuel discharging tube leading into the commingling chamber from the fuel inlet openings and having tangential discharge openings, a series of battle-plates in the commingling chamber surrounding the fuel disclnirging-tube, and a contracted nozzle attached to the body or tion to receive the admixture of fuel an air from the discharge opening of the commingling chamber.

2. A burner comprising a body portion having a cylindrical commingling chamber with fuel and air inlet openings leading into the center of aside wall and the periphery of said cylindrical commingling chamber, a fuel discharging tube extending into the commingling chamber axially from the fuel inlet opening and having tangential discharge openings in the sides thereof, and a series of battle-plates in the commingling chamber surrounding the fuel discharging tube.

3. A burner comprising a body portion having a cylindrical commingling chamber with fuel and air inlet openings leading into the center of a side wall and the periphery thereof respectively, with a discharge opening in the body portion opposite the fuel inletopening, a fuel discharging tube extending across the commingling chamber axially to the center of the discharge opening, and a series of diagonally disposed battle-plates surrounding the fuel discharging tube, the latter having tangential openings in the sides thereof for discharging the fuel against the baffle-plates.

4. A burner comprising a body portion having a cylindrical commingling chamber with fuel. and air inlet openings leading into the center of a side Wall and the periphery thereof respectively With a discharge opening in the Wall opposite the fuel inlet opening, afuel discharging tube extending across the commingling chamber axially to the center of the discharge opening and having tangential openings in the sides thereof through which the fuel is discharged, a series of diagonally disposed baflie-plates surrounding the fuel discharging tube, and a nozzle receiving the admixture from the discharge opening of the commingling chamher, said nozzle being contracted to its outer end. 1

5. A burner comprising a body portion having a cylindrical commingling chamber with a pipe extension from the periphery thereof through which air is supplied, a pipe extension projecting from the center of one side of said commingling chamber through which the fuel is supplied, a discharge opening in the opposite side of the commingling chamber from the fuel supply, and an annular series of transverse bafileplates extending around the inner side of the commingling chamber beyond the plane of the discharge opening; together With a detachable fuel discharging tube threaded into the inner end of the fuel supply opening to project axially across the center of the commingling chamber into the center of the discharge opening and having tangential openings in the sides thereof to discharge the fuel towards the battle-plates, and a tapered nozzle detachably connected to the body portion of the burner to receive the fuel mixture from the aforesaid discharge opening of the commingling chamber.

6. A burner comprising a body portion verse baffle-plates extending around the inner side of the commingling chamber;

together with a fuel discharging tube ex-' tending from the fuel supply opening into the commingling chamber axially and having tangential discharge opening in the sides thereof cooperating With the bafileplates, and a nozzle secured to the body portion of the burner to receive the fuel mixture from the discharge opening of the commingling chamber.

CARL FISCHER. 

